Nineteen free West Suffolk events run 11 to 20 September, from the Guildhall's wartime Ops Room to Ickworth. The national listing has library dates a day out.

Heritage Open Days returns on Friday 11 September and runs to Sunday 20 September, and every event is free (Heritage Open Days). Nineteen of them are in West Suffolk.

Before you plan a day around it, one warning. The dates for St Edmundsbury Cathedral’s Ancient Library on the national listing do not match the dates on the cathedral’s own site, and the national ones are wrong.

The cathedral library dates are a day out

The national Heritage Open Days entry for the Ancient Library gives its sessions as “Friday 12 September”, “Saturday 13 September”, “Friday 19 September” and “Saturday 20 September” (Heritage Open Days).

Those pairs cannot be right. In 2026, 12 September is a Saturday and 13 September is a Sunday. The weekday names and the dates disagree.

The cathedral’s own listing settles it. It gives the sessions as:

  • Friday 11 September, 2.00pm to 4.30pm
  • Saturday 12 September, 10.00am to 12.30pm
  • Friday 18 September, 2.00pm to 4.30pm
  • Saturday 19 September, 10.00am to 12.30pm

That is four dates, each one day earlier than the national listing says (St Edmundsbury Cathedral). The cathedral’s what’s-on index carries the same range, 11 to 19 September.

Anyone who trusts the national page and turns up on Sunday 20 September will find nothing on. Sessions run every 30 minutes and last 30 minutes. The library holds more than 550 books, mostly printed in the sixteenth and seventeenth centuries, and was founded by Dr Miles Mosse in 1595. It is reached by a small spiral staircase, so it is not accessible to wheelchair or pushchair users, and the cathedral caps each session at 10 people.

The Guildhall’s national entry has a smaller version of the same problem. Its timings block correctly says Sunday 20 September, but the description underneath still refers to “Sunday, September 8th”, a date that is a Tuesday this year.

Which West Suffolk Heritage Open Days venue is open on which day Open days from 11 to 20 September 2026. Guildhall: 20 September. Norman Tower: 12 September, 17 September. Ancient Library: 11 September, 12 September, 18 September, 19 September. Theatre Royal: 13 September. Ickworth: 11 September, 12 September, 13 September, 14 September. Great War Huts: 11 September, 12 September, 13 September, 14 September, 15 September, 16 September, 17 September, 18 September, 19 September, 20 September. Six venues, ten days: when each one is actually open Heritage Open Days 2026 in and around Bury St Edmunds. All entry free. Some sessions must be booked. 11 Fri 12 Sat 13 Sun 14 Mon 15 Tue 16 Wed 17 Thu 18 Fri 19 Sat 20 Sun September 2026 Guildhall Norman Tower Ancient Library Theatre Royal Ickworth Great War Huts Source: each venue's own listing (St Edmundsbury Cathedral, Bury St Edmunds Guildhall, National Trust) and Heritage Open Days. Ancient Library dates are the cathedral's, which differ from the national listing. Graphic by The Bury St Edmunds Post
Ten days, six venues, and only two of them open on more than four.

What is on in Bury St Edmunds

Four venues in the town itself, with the dates each venue publishes:

  • Bury St Edmunds Guildhall, Guildhall Street. Sunday 20 September, 11am to 3pm, no booking. The Grade I listed building holds the last surviving Royal Observer Corps wartime Operations Room in the country, and the walled garden is open. The Guildhall’s own calendar lists the same date and time and confirms admission is free (Bury St Edmunds Guildhall).
  • Norman Tower, St Edmundsbury Cathedral, Angel Hill. Saturday 12 September in 45 minute timed slots from 9.45am, and again on Thursday 17 September from 2pm to 5pm. The Thursday session is an open one with no booking; the Saturday slots are ticketed and capped at 16. Expect three sets of steps and a spiral staircase, and it is not suitable for under-eights (St Edmundsbury Cathedral).
  • Ancient Library, St Edmundsbury Cathedral. The four dates above.
  • Theatre Royal, Westgate Street. Sunday 13 September, 10am to 2pm, no booking. A behind-the-scenes look at the last Regency playhouse in the country, with props, costume and memorabilia out on display (Heritage Open Days). The theatre has not listed it on its own what’s-on page, so ring the box office on 01284 769505 if you want it confirmed before travelling.

Just outside the town

  • Ickworth, Horringer, about three miles south west. Free entry to the estate from 9am to 5pm, Friday 11 to Monday 14 September. House tours run 10.45am to 11.30am and should be booked; stonemasonry demonstrations run 10am to 3.30pm on the 11th, 12th and 14th, with a talk at 1pm each of those days. The National Trust’s own events page confirms the 11 to 14 September window (National Trust).
  • Great War Huts, Brook Farm Camp, Hawstead, about four miles south. A daily talk, 11am to noon, every day of the festival, followed by a guided tour of the restored First World War huts. Booking required, and there is no public transport to the site.

Brandon has the biggest programme in the district

Brandon, about 14 miles north west of Bury St Edmunds, has put on more events than the town has. Its programme includes guided history walks on the town’s river trade, its flint, brick and fur industries, and its pubs, a talk on the shared heritage of RAF Lakenheath and the US Air Force on 15 September, a heritage 5K social run on 20 September, and an exhibition at Brandon Heritage Centre on how women’s domestic work changed. Several need booking.

What it means for you

Everything above is free, which is the point of the festival. Three things worth doing before you set off:

  • Check the venue’s own page, not just the national one. The Ancient Library is proof of why. The national listing is built from what organisers submit, and it is not corrected when a submission carries a mistake.
  • Book where booking is asked for. The Norman Tower caps a slot at 16 and the Ancient Library at 10. Great War Huts and most of the Brandon walks require booking.
  • Check access before travelling. Two of the four Bury venues involve spiral staircases and worn steps. Ickworth’s Rotunda has a ramp and a lift, and the Theatre Royal describes its visit as step-free.

If you are driving in for the Guildhall, the nearest public car parks are Ram Meadow, the Arc, St Andrews and the Parkway multi-storey. Our guide to parking in Bury St Edmunds has the tariffs, and Bury St Edmunds roadworks and travel has anything currently affecting the routes in.